Vulnerability · Published Oct 27, 2026 · Assigned by VulnCheck

CVE-2026-116843Mistral Vibe before 3.0.3 RCE via Git Filter Drivers in Worktree Mode

High 8.8

In plain English

A high-severity security flaw in mistral-vibe from mistralai. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.4%top 62.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Mistral Vibe before 3.0.3 contains a remote code execution vulnerability that allows attackers to run commands by defining git filter drivers in an untrusted repository's .git/config. When started with --worktree, git worktree add applies .gitattributes and runs filter smudge, clean, or process commands before the trusted-folder check, executing attacker commands with user privileges.

Affected products (as reported)

Vendor	Product	Versions
mistralai	mistral-vibe	0 – before 3.0.3

Weakness: CWE-829 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

https://github.com/mistralai/mistral-vibe/issues/997 issue-tracking
https://github.com/mistralai/mistral-vibe/commit/7bb48f213ac677f943d5c791199ed3dddf302f00 patch
mistral-vibe v3.0.3 Release Notes release-notes
https://github.com/mistralai/mistral-vibe/blob/v2.24.1/vibe/core/worktree.py#L303-L317 technical-description
VulnCheck Advisory: Mistral Vibe before 3.0.3 RCE via Git Filter Drivers in Worktree Mode third-party-advisory